The Influence of Multicomponent Winter Wheat Seed Protectants on Its Productivity and Quality

We studied combined suspension compositions prepared by liquid-phase mechanical treatment based on the fungicides difenoconazole, tebuconazole, imazalil, fludioxanil, thiabendazole, prochloraz, sedoxan and the insecticides thiamethoxam, imidacloprid, plant growth regulators Enershanse, which showed a wide range of biological activity in field conditions. It was established that the main indicators of the quality of the final product - the nature of the grain, the amount of protein and gluten, glassiness, and the quality of gluten - depended on the fungicidal and insecticidal effects on the phytosanitary condition of winter wheat crops. All studied drugs had a protective effect. They contributed to the disinfection of winter wheat seeds from seed and soil pathology and harmful insects of the early period of plant development. It was found that for effective treatment of winter wheat seeds, it is best to use insectofungicidal preparations containing several components of different chemical classes. It was found that pre-sowing treatment of winter wheat seeds with a suspension composition of thiamethoxam + sedaxan + fludioxonil + tebuconazole in the form of Vibranse Integral, suspension concentrate provided the greatest increase in grain yield by 0.49 t/ha (7.3%) with a control yield of 6.74 t/ha. The use of this drug ensures a particularly high protein content in the grain (16.07%) and gluten (36.8%) of the first quality group. We have established diverse positive effects of the drug Vibranse Integral, manifested in enhancing the growth processes of the root system due to the presence of the sedaxane molecule, the purpose of which is aimed at the formation of a healthy and well-developed root system, increasing the stress resistance of plants to abiotic factors, and the manifestation of a good protective effect in relation to soil and seed infections. We determined the lowest, relative to other studied drugs, yield (6.17 t/ha) from the use of a suspension composition of thiamethoxam (262.5 g/l) + difenoconazole (25 g/l) + fludioxonil (25 g/l (Celest Top), but the grain was of high quality. All other seed protectants occupied an intermediate position between the above-mentioned drugs.